Acetyl chloride → HCID 20130688, compound

HRID 1252925Notes

Reaction equation

HRID 1252925 reaction equation
[Cl:1][C:2]1[CH:13]=[C:12]([F:14])[C:11]([N:15]2[C:20](=[O:21])[C:19]3[CH2:22][CH2:23][CH2:24][C:18]=3[NH:17][C:16]2=[O:25])=[CH:10][C:3]=1[C:4]([O:6][CH:7]([CH3:9])[CH3:8])=[O:5].[H-].[Na+].[C:28](Cl)(=[O:30])[CH3:29]>CN(C)C=O.C(OCC)(=O)C>[Cl:1][C:2]1[CH:13]=[C:12]([F:14])[C:11]([N:15]2[C:20](=[O:21])[C:19]3[CH2:22][CH2:23][CH2:24][C:18]=3[N:17]([C:28](=[O:30])[CH3:29])[C:16]2=[O:25])=[CH:10][C:3]=1[C:4]([O:6][CH:7]([CH3:9])[CH3:8])=[O:5]

Participants

6

Reactant 3

HCID 6367Acetyl chlorideHCID 24758Sodium hydrideHCID 20130670HCID 20130670, compound

Product 1

HCID 20130688HCID 20130688, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent2×HCID 8857Ethyl AcetateSolvent

Procedure

A solution of 3.6 g of isopropyl 2-chloro-4-fluoro-5-(1,2,4,5,6,7-hexahydro-2,4-dioxo-3H-cyclopenta[d]pyrimidin-3-yl)-benzoate in 50 ml of absolute dimethylformamide is stirred at room temperature for 2 hours with 0.43 g of a 55% sodium hydride dispersion. A solution of 0.93 g of acetyl chloride in 10 ml of absolute dimethylformamide is subsequently added dropwise during 10 minutes and the mixture is stirred for 2 hours. The reaction mixture is dissolved in 100 ml of ethyl acetate and the solution is washed thoroughly with water. The organic phase is dried over anhydrous sodium sulphate and evaporated to dryness. The residue is purified by chromatography on a silica gel column using methylene chloride/ethyl acetate (3:1) as the eluent. There is obtained isopropyl 2-chloro-4-fluoro-5-(1,2,4,5,6,7-hexahydro-1-acetyl-2,4-dioxo-3H-cyclopenta[d]pyrimidin-3-yl)-benzoate, 1H-NMR (CDCl3, 400 MHz) 7.86 ppm (d, 1H), 7.37 ppm (d, 1H), 5.24 ppm (m, 1H), 3.13 ppm (m, 2H), 2.75 ppm (m, 2H), 2.68 ppm (s, 3H), 2.12 ppm (m, 2H), 1.36 ppm (d, 6H).

Workup

  1. washthe solution is washed thoroughly with water
  2. dry with materialThe organic phase is dried over anhydrous sodium sulphate
  3. customevaporated to dryness
  4. customThe residue is purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-c2013161db77448cbeb4f184e5a2c432
Source dataset
uspto-grants-1988_05
Patent number
US04746352

Reaction notes

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